US5806918A - Vehicle body structure - Google Patents

Vehicle body structure Download PDF

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Publication number
US5806918A
US5806918A US08/705,092 US70509296A US5806918A US 5806918 A US5806918 A US 5806918A US 70509296 A US70509296 A US 70509296A US 5806918 A US5806918 A US 5806918A
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US
United States
Prior art keywords
vehicle body
floor
frames
front ends
side sills
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US08/705,092
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English (en)
Inventor
Yoshinobu Kanazawa
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Assigned to HONDA GIKEN KOGYO KABUSHIKI KAISHA reassignment HONDA GIKEN KOGYO KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KANAZAWA, YOSHINOBU
Application granted granted Critical
Publication of US5806918A publication Critical patent/US5806918A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/07—Understructures, i.e. chassis frame on which a vehicle body may be mounted wide-hipped frame type, i.e. a wide box-shaped mid portion with narrower sections extending from said mid portion in both fore and aft directions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/02—Side panels
    • B62D25/025—Side sills thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units
    • B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
    • B62D25/2018—Floors or bottom sub-units in connection with other superstructure subunits the subunits being front structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units
    • B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
    • B62D25/2036—Floors or bottom sub-units in connection with other superstructure subunits the subunits being side panels, sills or pillars

Definitions

  • the present invention relates generally to a body structure for vehicles, and more particularly to a vehicle body structure having a front section designed to effectively absorb the energy of a crash as well as to provide a certain degree of rigidity.
  • FIGS. 8A and 8B A conventional vehicle body structure is shown in FIGS. 8A and 8B hereof for the purpose of explanation.
  • FIG. 8A shows in plan a front section of the vehicle body structure
  • FIG. 8B is a perspective view of the front section of the same vehicle body structure.
  • the vehicle body 100 generally comprises first floor frames 101, 101, second floor frames 102, 102, and side sills 103, 103 each provided in a pair about a longitudinal central axis of the vehicle body and arranged in a transverse outward direction of the vehicle body in the order named. Front ends of the first and second floor frames 101, 101 and 102, 102 and front ends of the side sills 103, 103 are connected via left and right side outriggers 104, 104 to rear ends of left and right front side frames 105, 105. A bumper beam 106 is attached to front ends of the front side frame 105, 105.
  • the vehicle body 100 further includes a floor panel 107 extending between the left and right side sills 103, 103 such that the floor panel 107 is reinforced by the aforesaid left and right first floor frames 101, 101 and the aforesaid left and right second floor frames 102, 102.
  • a floor tunnel frame 108 formed along the longitudinal central axis of the vehicle body.
  • a vehicle body structure of this invention includes a pair of floor frames, a pair of auxiliary frames, and a pair of side sills disposed in juxtaposition about a longitudinal central axis of a vehicle body and arranged in the order named in a direction transversely and outwardly of the vehicle body wherein the auxiliary frames have front ends spaced rearwardly, by a predetermined distance, from rear end portions of a pair of side outriggers by means of which the floor frames and the side sills are connected to left and right front side frames.
  • a front section of the vehicle body which is located forwardly of the front ends of the auxiliary frames has a smaller rigidity than a rear section of the vehicle body located rearwardly of the front ends of the auxiliary frames.
  • the auxiliary frames bear or sustain the collision forces in cooperation with the floor frames and the side sills, so that the front section of the vehicle body can retain a certain degree of rigidity.
  • the vehicle body structure of the invention can effectively absorb the energy of a crush or collision while maintaining a certain degree of rigidity of the front section of the vehicle body.
  • the side sills are each composed of a box-shaped follow member containing therein an elongated reinforcing member.
  • the reinforcing member has a front end substantially aligned with the front ends of the auxiliary frames in the transverse direction of the vehicle body so that the rear section of the vehicle body located rearwardly of the front ends of the auxiliary frames has an increased degree of rigidity.
  • FIG. 1 is a plan view showing a first embodiment of a vehicle body structure according to the present invention
  • FIG. 2 is an enlarged cross-sectional view taken along line II--II of FIG. 1;
  • FIG. 3 is an enlarged cross-sectional view taken along line III--III of FIG. 1;
  • FIG. 4 is a perspective view of a front section of the vehicle body according to the first embodiment
  • FIG. 5 is a plan view showing a second embodiment of a vehicle body structure according to the present invention.
  • FIG. 6 is an enlarged cross-sectional view taken along line VI--VI of FIG. 5;
  • FIG. 7 is an enlarged cross-sectional view taken along line VII--VII of FIG. 5;
  • FIGS. 8A and 8B are explanatory views of a conventional vehicle body structure.
  • FIGS. 1 through 4 shows a first embodiment of a vehicle body structure according to the present invention.
  • a floor panel is omitted for purposes of illustration.
  • a vehicle body 1 essentially comprises left and right front side frames 2, 2 extending longitudinally of the vehicle body 1 along opposite sides of a front portion of the vehicle body 1, left and right side outriggers 3, 3 joined at their front ends to the respective rear ends of the front side frames 2, 2, left and right side sills 4, 4 joined at their front ends to the respective rear ends of the side outriggers 3, 3, left and right side sill extensions 5, 5 joined at their front ends to the respective rear ends of the side sills, and left and right rear side frames 7, 7 connected to the respective rear ends of the side sill extensions 5, 5 via left and right connecting members 6, 6.
  • the vehicle body 1 further includes left and right floor frames 11b, 11b, and left and right auxiliary frames 12, 12 that are disposed in juxtaposition together with the side sills 4, 4 about a longitudinal central axis of the vehicle body 1 and arranged in the order named in a direction transversely and outwardly of the vehicle body 1. Front ends of the floor frames 11b, 11b and front ends of the side sills 4, 4 are connected to the rear ends of the front side frames 2, 2 via the side outriggers 3, 3 that have a substantially Y-shaped configuration.
  • the auxiliary frames 12, 12 have front ends 12a, 12a spaced rearwardly by a predetermined distance L 1 from rear end portions 3a, 3a of the side outriggers 3, 3 (that are located directly below a dashboard, not shown, for example, of the vehicle body 1).
  • a bumper beam 14 is attached to the front ends of the front side frames 2, 2.
  • Reference characters 15 and 16 denote a middle crossbar and a rear crossbar, respectively.
  • the floor frames 11b, 11b are joined at their rear ends to the middle crossbar 15.
  • the vehicle body 1 also includes a floor panel 21 extending between the left and right side sills 4, 4.
  • the floor panel 21 has an integral floor tunnel frame 22 extending along the longitudinal central axis of the vehicle body.
  • the floor tunnel frame 22 has a downwardly opening recessed portion reinforced from the inside thereof by a floor center frame 11.
  • the side sills 4, 4 are each composed of a box-shaped hollow member formed jointly by a side sill inner 4a and a side sill outer 4b.
  • the floor center frame 11 has a generally hat-shaped transverse cross section and includes a downwardly opening, substantially inverted U-shaped center frame 11a fitted with an inside surface of the recessed portion of the floor tunnel frame 22, and the aforesaid left and right floor frames 11b, 11b of an upwardly opening generally channel-shaped cross section contiguous to and formed integrally with opposite open ends of the U-shaped center frame 11a.
  • the left and right floor frames 11b, 11b reinforce the underside of the floor panel 21.
  • the floor panel 21 is further provided with an additional reinforcing member which is composed of the aforesaid left and right auxiliary frames 12, 12.
  • the auxiliary frames 12, 12 have an inverted hat-shaped transverse cross section.
  • the box-shaped side sills 4, 4 each include a first side sill reinforcing member 24 disposed therein and extending along a longitudinal portion of the side sill 4.
  • the reinforcing member 24 has a substantially L-shaped cross section and is attached to one upper interior corner of the box-shaped side sill 4 which is located closer to the longitudinal central axis of the vehicle body 1 than the other upper interior corner.
  • auxiliary frames 12 have rear ends directed directly below the floor cross frames 27, 27 which are disposed substantially at a longitudinal central portion of the vehicle body 1.
  • the side sill reinforcing member 24 has a front end substantially aligned with the front ends 12a of the auxiliary frames 12 in the transverse direction of the vehicle body 1.
  • the reinforcing member 24 has a length L2 such that the rear end of the reinforcing member 24 is located substantially below a center pillar, not shown, of the vehicle body 1.
  • the front ends 12a, 12a of the auxiliary frames 12, 12 are closed and structurally separated from the side outriggers 3, 3, by the spacing of the predetermined distance L 1 defined between the front ends 12a, 12a and the side outriggers 3, 3.
  • the closed front ends 12a, 12a are preferably formed as sloped end faces to facilitate the production of the auxiliary frames 12.
  • a front section of the vehicle body 1 is divided, in terms of rigidity, into two parts by the front ends 12a, 12a. That is, a front section of the vehicle body 1 located forwardly of the front ends 12a, 12a has less rigidity than a rear section of the vehicle body 1 located rearwardly of the front ends 12a, 12b.
  • the front ends of the side sill reinforcing members 24, 24 are substantially disposed in transverse alignment with the front ends 12a, 12a of the auxiliary frames 12, 12, the rigidity of the rear section of the vehicle body 1, which is located rearwardly of the front ends 12a, 12a, is further increased by the reinforcing members 24, 24.
  • FIGS. 5 through 7 there is shown a second embodiment of the present invention.
  • This embodiment has a distinguishable feature that, as shown in FIG. 7, the side sills 4, 4 have an additional reinforcement and the floor frames 11b, 11b are provided with a reinforcement.
  • the box-shaped side sills 4, 4 each include a second side sill reinforcing member 25 disposed therein and extending along a longitudinal portion of the side sill 4.
  • the second side sill reinforcing member 25 has a substantially L-shaped cross section and is attached to the other upper interior corner which is spaced farther away from the longitudinal central axis of the vehicle body 1 than the opposite upper interior corner to which the reinforcing member 24 is attached.
  • the upwardly opening generally channel-shaped floor frames 11b, 11b are each provided with a floor frame reinforcing member 26 disposed in the floor frame 11b and extending along a longitudinal portion of the same.
  • the floor frame reinforcing member 26 has a generally channel-shaped cross section and is attached to the interior bottom surf ace of each of the channel-shaped floor frames 11b.
  • the second side sill reinforcing members 25, like the first side sill reinforcing members 24 previously described in conjunction with the first embodiment, have front ends substantially disposed in transverse alignment with the front ends 12a of the auxiliary frames 12 and extend rearwardly from the front ends 12a over the predetermined length L 2 .
  • the floor frame reinforcing members 26 have front ends substantially aligned with the front ends 12a of the auxiliary frames 12 in the transverse direction of the vehicle body 1 and extend rearwardly from the front ends 12a over a predetermined length L 3 which is substantially the same as the length of the auxiliary frames 12, 12.
  • the rear section of the vehicle body which is located rearwardly of the front ends 12a of the auxiliary frames 12 are further increased in its rigidity as the second side sill reinforcing members 25 and the floor frame reinforcing members 26 have respective front ends substantially aligned with the front ends 12a of the auxiliary frames 12 in the transverse direction of the vehicle body 1.
  • the front ends 12a, 12a of the auxiliary frames 12, 12 are spaced rearwardly from the side outriggers 3, 3 by a predetermined distance L 1 with the result that a front section of the vehicle body located forwardly of the front ends 12a is less rigid than a rear section of the vehicle body located rearwardly of the front ends 12a.
  • the structure and length of the auxiliary frames 12, 12 should by no means be limited to those in the illustrated embodiments provided that a space is defined between the front ends 12a of the auxiliary frames 12 and the side outriggers 3, 3.
  • the auxiliary frames 12, 12 may either include a rib or bead on a wall of each auxiliary frame 12 to increase the rigidity of the auxiliary frame 12 or have an opening in the wall to decrease the rigidity of the auxiliary frame 12.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
US08/705,092 1995-09-01 1996-08-29 Vehicle body structure Expired - Lifetime US5806918A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP07248736A JP3137881B2 (ja) 1995-09-01 1995-09-01 自動車の車体構造
JP7-248736 1995-09-01

Publications (1)

Publication Number Publication Date
US5806918A true US5806918A (en) 1998-09-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US08/705,092 Expired - Lifetime US5806918A (en) 1995-09-01 1996-08-29 Vehicle body structure

Country Status (7)

Country Link
US (1) US5806918A (ja)
JP (1) JP3137881B2 (ja)
CN (1) CN1081146C (ja)
DE (1) DE19634601B4 (ja)
GB (1) GB2304650B (ja)
MY (1) MY120674A (ja)
TR (1) TR199600697A2 (ja)

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US5992921A (en) * 1996-03-19 1999-11-30 Toyota Jidosha Kabushiki Kaisha Vehicle body structure
US6007145A (en) * 1998-04-14 1999-12-28 Nissan Motor Co., Ltd. Floor structure of vehicle body
US6039386A (en) * 1997-03-24 2000-03-21 Honda Giken Kogyo Kabushiki Kaisha Floor structure of a vehicle
US6209914B1 (en) * 1988-05-12 2001-04-03 Daimlerchrysler Ag Body shell for a passenger car with reduced overall deformation
US6273486B1 (en) * 2000-03-17 2001-08-14 General Motors Corporation Integrated tunable front crash support structure
EP1134148A2 (en) * 2000-03-15 2001-09-19 Nissan Motor Company, Limited Frame structure for vehicle
US6460918B1 (en) * 1999-10-19 2002-10-08 Nissan Motor Co., Ltd. Vehicle body structure
US20030137163A1 (en) * 2002-01-23 2003-07-24 Honda Giken Kogyo Kabushiki Kaisha Vehicle floor structure
US20030189358A1 (en) * 2002-04-09 2003-10-09 Shigeki Watanabe Vehicle body structure
US6688677B2 (en) * 2001-04-05 2004-02-10 Daimlerchrysler Ag Bodywork frame for a motor vehicle
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FR2859447A1 (fr) * 2003-09-09 2005-03-11 Peugeot Citroen Automobiles Sa Soubassement pour vehicule automobile du type cabriolet ou coupe cabriolet
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US20050161968A1 (en) * 2003-09-03 2005-07-28 Mostafa Rashidy Structural seat system for an automotive vehicle
US20050161967A1 (en) * 2003-09-03 2005-07-28 Mostafa Rashidy Structural seat system for an automotive vehicle
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US20160121928A1 (en) * 2014-10-29 2016-05-05 GM Global Technology Operations LLC Vehicle chassis structure
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JP5378431B2 (ja) * 2011-02-15 2013-12-25 本田技研工業株式会社 車体フロア構造
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GB2304650A (en) 1997-03-26
GB2304650B (en) 1998-11-25
TR199600697A2 (tr) 1997-03-21
DE19634601B4 (de) 2009-03-19
CN1081146C (zh) 2002-03-20
JP3137881B2 (ja) 2001-02-26
DE19634601A1 (de) 1997-03-06
CN1151954A (zh) 1997-06-18
GB9618146D0 (en) 1996-10-09
MY120674A (en) 2005-11-30
JPH0966864A (ja) 1997-03-11

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